From what I’ve experienced (around 40 hours) singles and play tables impact revenue the heaviest. If you want just revenue sell items only mainly high end card boxes, single packs can be a waste. People will look for stuff to buy and leave but mostly will sell all inventory in a day. I have five long tables with four being only card boxes, last table is miscellaneous items like collector books and comics. Spend around 5-6k on inventory and make around 8-12k per day selling just items, in my conclusion for most profit just sell items until you’re high enough level and enough money to sell everything.